Crusher clearing system



Sept 20, 1966 R. J. GAsPARAc; ETAL 3,273,8W

CRUSHER CLEARING SYSTEM 2 Sheets-Sheet 1 Filed DSC. 2G, 1953 Sept 20, 1966 R. J. GAsPARAc ETAL 3,273,810

CRUSHER CLEARING SYSTEM Filed Deo. 2G, 1963 2 Sheets-Sheet .2

United States Patent O FCIce 3,273,810 CRUSHER CLEARING SYSTEM Rudolph .l'. Gasparac, Milwaukee, Arnold P. Szaj, Hales Corners, and Wolfgang Turnwald, Milwaukee, Wis., assignor-s to Nordberg Manufacturing Company, Milwaukee, Wis., a corporation of Wisconsin Filed Dec. 26, 1963, Ser. No. 333,429 6 Claims. (Cl. 241-290) This invention relates to a Crusher clearing system with removable jacks for 4opening the crushing cavity, and `also relates to a portable jack adapted to be mounted on such a Crusher.

An object of this invention is a crusher in which the crushing cavity can be opened by portable jacks raising the `tilting ring and superstructure `from the underlying `frame portion.

Another object is a portable jack which lcan be more economically and simply used -for opening the crushing cavity in operations involving a plurali-ty of crushers.

Another object Iis a Crusher having mounted thereon quickly installed jacks whose action causes a reaction which raises an upper portion of the crusher to open the crushing cavity. l

Another object is a jack adapted to be mounted on a crusher with parts designed to receive the jack so that said jack can be mounted and dismounted quickly and simply as needed to hold the crushing cavity open.

Another object is a hydraulically powered jack which can be mounted on different crushers which haveV parts designed for receiving the jack so that one jack or a set of such jacks can be used in many different crushers for opening the crushing cavity.

These objects are realized along with other objects not stated which will become .apparent from the following specification and drawings in which:

FIGURE 1 is a portion of a side elevational View, partly in section, showing a jack mounted on the Crusher;

FIGURE 2 is a top plan View with parts removed showing the jacks mounted in position;

FIGURE 3 is a section along line .3i-3 of FIGURE 2, on an enlarged scale, with parts removed; and

FIGURE 4 is a section along line 4 4 of FIGURE 2,

In FIGUR-E 1, a crusher is shown generally at and may be of the gyratory cone crusher type which is well known and need not be described in detail. It is suicient to note that such crushers have a frame portion which includes a frame base dlange 12, a housing 114 and a supporting flange or frame flange 16. An adjustment ring or tilting ring 18 with ring flange 19 is supported by the `frame flange 16. The tilting ring is shown theadably supporting an adjustable bowl 20 to which is xed .a bowl liner 22.. The bowl liner defines a crushing cavity with a crushing head 26. `Material to be crushed is introduced 'from a feed platform 28 onto a feed plate 30 where it is distributed into the crushing cavity. The head 26 is gyrated by an eccentric 32 through a shaft 34. The eccentric is turned by a ring gear 36 meshing with pinion 38, which is powered by appropriate means not sho-Wn.

The bowl is releasably held on trame flange 16 by springs or the like such as 39 distributed around the frame. The bottom turns of each spring in the cluster are seated on a plate y40, and t-he top turns held against the bottom of the frame .flange 16. An apron 42 on the frame flange may help to enclose the cluster of springs. Bosses such as 44 may be used to position some of the springs, and bolts such as 46 may pass through the interior of other coil springs. The bolt 46 has its head 48 held aga-inst the top of the tilting ring and its bottom end is locked by a nut 50 against plate 40. When uncrushable material, such as tramp iron, enters the crush- 3 ,Z 73,8 l Patented Sept. 20, 1966 ing cavity, the 4spring clus-ter will allow the tilting ring to be separated from the frame portion to increase the size of the crushing cavvity and let the tramp iron f-all through. Under such conditions, the springs 'will become compressed but will urge the tilting ring back towards the frame flange after the uncnushable material passes. When uncrushable material gets jammed in the cavity, or if the cavity is overloaded and jammed, a series of jacks distributed around the crusher, such as 511, are activated so that tilting ring 18 is raised and separated -from .frame flange 1-6. This action will also compress the spring clusters.

`Portions of the tilting ring and iframe are equipped to receive a number of removable jacks such as indicated in FIGUREl 2. Each jack includes an upper body section or cylinder 52 shown tapered at opposed ends along the long axis of the body section. The cylinder has a pair of legs such as 54 and 56 fixed to the tapered ends by welds or the like such as 58. The legs may, of course, be integrally cast wit-h the body section. Each leg and the tapered end of the body section has passageways 60, 62 through which are inserted bolts 64 .and l65. The bolts are shown as threaded at their lower ends 66 and 68 and secured in tapped holes 70, 72 in the ring flange *19. A piston 74 is in cylinder chamber 76 which is closed by a cap or plate 78 held by a snap ring 80` on the cylinder. The piston rod 82 on piston 74 is sealed by an O-ring seal 84 or the like where it passes through Wall 78. The piston rod extends through a passage 85 in the tilting ring and the bottom of the rod may be seated in a socket 86 in frame flange 16 or it may be flat. Hydraulic fluid is introduced or exhausted through a line 87 into portion 88 of cylinder chamber 716. The lforce of the Illuid will raise the cylinder 52. This, in turn, will raise the tilting ring and separate it from the `frame so that the crushing cavity is held open until the hydraulic pressure is relieved.

The use and operation of the invention are as follows:

A set of jacks permanently mounted on a crusher may be considered too expensive, particularly when the Crusher requires clearing quite infrequently, say once or twice a year at the most. A particular installation may have ten to fifteen crushers and for all of the crushers to have permanently mounted jacks would be Very expensive.

`In certain situations where the crushers require infrequent clearing, depending upon the type of material and the nature of the installation, portable jacks may be not only much less expensive but also completely adequate as lfar as keeping all crushers running. While the jacks have been referred to as portable, it should be understood that this term is used to detne an assembly or `set of jacks which may be `quickly installed on a jammed Crusher to clear it and then removed. The assembly or set of jacks may be connected by exible tubing or hoses, and when not in use, the entire assembly of jacks, tubing, etc. may be stored until a stalled Crusher requires clearing. The hydraulic pump and related power equipment has not been shown but it should be understood that this can take the form of a simple hydraulic pump of sutlicient capacity and possibly electrically driven or with its own source of power.

The assembly of jacks, connections, hoses, pump, etc. may also be considered a conversion unit which may be Aapplied to a cr-usher in the ield and left as a permanent installation, `Or the jacks might be applied to new equipment. But the basic purpose of the arrangement of jacks, connections, etc., as shown and described, is a clearing attachment which can be held in readiness to be applied to clear `any one of a number of crushers.

When the jacks `are not in place, openings 70 `and 72 .and the passage 85 in the tilting ring probably should be capped to prevent dust and dirt from accumulating.

The number of such jacks required in an assembly for a particular crusher will depend upon the size of the crusher and jacks and the nature of the installation.

While the preferred form of the invention yhas been shown and described, it should be understood that various additions, modifications, changes and alterations may be made `without departing from the inventions fundamental theme.

We claim:

ll, In a crusher, `a main frame, a bowl releas-ably mounted on the main frame, springs urging said bowl toward said frame, a portable jacking assembly removably mounted on the bowl, said jacking assembly supported by said bowl, and means in said jacking assembly engaging the main #fr-ame so that upon actuation of the assembly, the bowl will be raised relative to the main lframe and against the urging of said springs so that the crushing cavity may be cleared.

2. In combination, a cnusher having a main frame with a surrounding ange at the top, a tilting ring releasably mounted on the main frame ange, a plurality of portable jacks mounted on the tilting ring in substantially equally spaced relation, mounting means on each jack to securely tix the jack to the tilting ring, a bore in the tilting ring below each jack, actuating means in each jack adapted to move through the bore, and a seat in the main frame flange below each `bore to receive the action of 'the actuating means so a resulting reaction raises the tilting ring.

3.y A port-able jack adapted to be mounted and removed from a tilting ring of a crusher having a ring flange with a bore positioned adjacent to a frame flange of an underlying main frame which includes, in combination, a body section, actuating means supported on the body section, means on the body section for remofvably mounting the jack securely in the ring flange, and actuating means in the jack adapted to move through said bore in the ring ange onto a seat in the frame ange so that actuation thereof raises the tilting ring xed to the mounting means of the jack.

4. In a crusher, a main frame, a ybowl releasably mounted on the main frame, a portable jacking assembly removably mounted on the bowl, said jacking assembly including a plurality of hydraulic jacks, each jack having a piston and a cylinder, said cylinder being removably connected to the bowl, said piston extending through the bowl and engaging the main frame so that upon actuation thereof, the cylinder will be raised, thereby raising the bowl.

5. In a crusher, a main frame, a bowl releasably mounted on the main frame, said bowl including a bowl proper adjustably mounted in a tilting ring, with the tilting ring releasably mounted on the main frame, a portable jacking assembly, said jacking assembly including a plurality of hydraulic jacks, each jack having a piston and cylinder, said cylinder being removably mounted on and extending above the tilting ring, with the piston of each of the portable jacks extending through the tilting ring and engaging the main frame.

`5. In a crusher, a main frame, a bowl and tilting ring assembly releasably mounted on the main frame, a portable jacking assembly releasably fastened to the tilting ring, a passageway in the tilting ring, and actuating means .in the jacking assembly `adapted to pass through a passageway and engage the main `frame, whereby the jacking assembly and the tilting ring to which said assembly is fastened will tbe raised relative to the main frame so that the crushing cavity may be cleared.

References Cited by the Examiner UNITED STATES PATENTS 2,680,571 6/1954 Bjarme 241-215 X 3,133,708 5/1964 Bond 24rl-290 3,140,835 7/1964 Balmer 241--215 X ROBERT C. RIORDON, Primary Examiner.

D. G. KELLY, Assistant Examiner. 

1. IN A CRUSHER, A MAIN FRAME, A BOWL RELEASABLY MOUNTED ON THE MAIN FRAME, SPRINGS URGING SAID BOWL TOWARD SAID FRAME, A PORTABLE JACKING ASSEMBLY REMOVABLY MOUNTED ON THE BOWL, SAID JACKING ASSEMBLY SUPPORTED BY SAID BOWL, AND MEANS IN SAID JACKING ASSEMBLY ENGAGING THE MAIN FRAME SO THAT UPON ACTUATION OF THE ASSEMBLY, THE BOWL WILL BE RAISED RELATIVE TO THE MAIN 